Winegrape cultivars (Vitis vinifera) vary in susceptibility to the grapevine trunk pathogens Eutypa lata and Diplodia seriata

IF 2.5 3区农林科学 Q3 FOOD SCIENCE & TECHNOLOGY

Australian Journal of Grape and Wine Research Pub Date : 2021-11-16 DOI:10.1111/ajgw.12531

M.R. Sosnowski, M.R. Ayres, M.G. McCarthy, E.S. Scott

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引用次数: 8

Abstract

Background and Aims

Eutypa and Botryosphaeria dieback are diseases that affect vineyards worldwide, reducing productivity and longevity. The ability of the causal pathogens Eutypa lata and Diplodia seriata to colonise grapevine canes was investigated in the search for resistance or tolerance to trunk diseases.

Methods and Results

Visual assessments of 174 winegrape cultivars (Vitis vinifera) in a mature germplasm collection in the Barossa Valley in South Australia revealed substantial variation (0–98%) in severity of foliar symptoms and dieback. A selection of 18 cultivars representing those without symptoms or low (<10%) severity was compared with the susceptible cultivars Shiraz and Sauvignon Blanc. Inoculation of canes in situ in the vineyard and detached canes in the greenhouse, confirmed variability among cultivars for the extent of pathogen colonisation.

Conclusions

Cultivars varied in susceptibility to colonisation by E. lata and D. seriata, with some differences between the two pathogens in terms of the ranking of cultivars. Muscadelle was most resistant to colonisation by both pathogens, and Sauvignonasse was the most susceptible.

Significance of the Study

Knowledge of cultivar susceptibility to grapevine trunk diseases will assist in prioritisation of disease management strategies. Identification of cultivars with resistance could inform selection of planting material and may lead to improved breeding programs in the future.

Abstract Image

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葡萄品种(Vitis vinifera)对葡萄树干病原菌的易感性各不相同

背景和目的葡萄枯萎病和葡萄枯萎病是影响全球葡萄园的疾病，降低了生产力和寿命。为了寻找葡萄藤对树干病害的抗性或耐受性，研究了致病病原菌白腐菌(Eutypa lata)和seriadiplodia serata在葡萄藤上定殖的能力。方法与结果对南澳大利亚巴罗萨河谷174个酿酒葡萄品种(Vitis vinifera)的成熟种质进行了目视评价，结果显示其叶面症状和枯死的严重程度存在显著差异(0 ~ 98%)。选择18个无症状或严重程度低(<10%)的品种与易感品种设拉子和长相思进行比较。在葡萄园中原位接种甘蔗和在温室中分离的甘蔗，证实了不同品种间病原菌定殖程度的差异。结论不同品种对叶面裂裂菌和叶面裂裂菌定殖的易感性存在差异，但品种间的排名存在一定差异。Muscadelle对这两种病原体的定殖最具抵抗力，Sauvignonasse最敏感。研究的意义葡萄主干病害的品种敏感性知识将有助于病害管理策略的优先排序。鉴定具有抗性的品种可以为种植材料的选择提供信息，并可能导致未来育种计划的改进。

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来源期刊

Australian Journal of Grape and Wine Research 工程技术-食品科技

CiteScore

5.30

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： The Australian Journal of Grape and Wine Research provides a forum for the exchange of information about new and significant research in viticulture, oenology and related fields, and aims to promote these disciplines throughout the world. The Journal publishes results from original research in all areas of viticulture and oenology. This includes issues relating to wine, table and drying grape production; grapevine and rootstock biology, genetics, diseases and improvement; viticultural practices; juice and wine production technologies; vine and wine microbiology; quality effects of processing, packaging and inputs; wine chemistry; sensory science and consumer preferences; and environmental impacts of grape and wine production. Research related to other fermented or distilled beverages may also be considered. In addition to full-length research papers and review articles, short research or technical papers presenting new and highly topical information derived from a complete study (i.e. not preliminary data) may also be published. Special features and supplementary issues comprising the proceedings of workshops and conferences will appear periodically.

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